natlinear LN2065
LN2065 is a wide input voltage, high efficiency step-down DC/DC converter that operates in either CV (Constant Output Voltage) mode or CC(Constant Output Current) mode. It also integrates adaptive gate drive to achieve excellent EMI performance passing EN55022 Class B EMC standard without adding additional EMI components while maintaining high conversion efficiency. LN2065 provides up to 3.5A output current at 125kHz switching frequency.GENERAL DESCRIPTION
LN2065 integrates control scheme to achieve high-accuracy constant current control without the expensive, high accuracy current sense resistor. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit. LN2065 are available in ESOP package and require very few external devices for operation.●
APPLICATIONS
● Car Charger/ Adaptor● General-Purpose CV/CC Power Supply
● Rechargeable Portable Devices
●
FEATURES
● Up to 3.5A output current● 125kHz Switching Frequency Eases EMI Design
● 91% Efficiency (Vout=5V@2.4A at Vin=12V)
● Resistor Programmable for Output Cable Drop Compensation
● Cycle-by-Cycle Current Limit, Output Over Voltage Protect, Thermal Shutdown, Input Under Voltage Lockout
● Integrated Soft Start
● ±7.5% CC Accuracy
● ±2% CV Accuracy
● High-Side Rdson 50mΩ
● Package
● ESOP8
● Typical Application VIN 10~30V + 100uF 3.3nF 25k 10uF HSB IN SW LN2065 COMP ISET GND OVP FB 24.9k 22nF 28uH SBL540 VOUT 5V/3.5A 51k 100k + 330uF 1uF 9.76k 15k Rev.1.3 —Feb.